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| author | Nick Piggin <npiggin@suse.de> | 2008-02-07 18:46:06 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-07 19:09:22 -0800 |
| commit | a13ff0bb3feda8b1fcffc69951320277ed7c4101 (patch) | |
| tree | e9f1179086614b5c435d7a81e19f99746da17214 /drivers/scsi/sg.c | |
| parent | c00f08d705e149fbfaf7a252b4d4fbb7affdcc96 (diff) | |
| download | linux-a13ff0bb3feda8b1fcffc69951320277ed7c4101.tar.gz | |
Convert SG from nopage to fault.
Signed-off-by: Nick Piggin <npiggin@suse.de> Cc: Douglas Gilbert <dougg@torque.net> Cc: James Bottomley <James.Bottomley@steeleye.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/scsi/sg.c')
| -rw-r--r-- | drivers/scsi/sg.c | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c index aba28f335b88..e5156aa6dd20 100644 --- a/drivers/scsi/sg.c +++ b/drivers/scsi/sg.c @@ -1160,23 +1160,22 @@ sg_fasync(int fd, struct file *filp, int mode) return (retval < 0) ? retval : 0; } -static struct page * -sg_vma_nopage(struct vm_area_struct *vma, unsigned long addr, int *type) +static int +sg_vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf) { Sg_fd *sfp; - struct page *page = NOPAGE_SIGBUS; unsigned long offset, len, sa; Sg_scatter_hold *rsv_schp; struct scatterlist *sg; int k; if ((NULL == vma) || (!(sfp = (Sg_fd *) vma->vm_private_data))) - return page; + return VM_FAULT_SIGBUS; rsv_schp = &sfp->reserve; - offset = addr - vma->vm_start; + offset = vmf->pgoff << PAGE_SHIFT; if (offset >= rsv_schp->bufflen) - return page; - SCSI_LOG_TIMEOUT(3, printk("sg_vma_nopage: offset=%lu, scatg=%d\n", + return VM_FAULT_SIGBUS; + SCSI_LOG_TIMEOUT(3, printk("sg_vma_fault: offset=%lu, scatg=%d\n", offset, rsv_schp->k_use_sg)); sg = rsv_schp->buffer; sa = vma->vm_start; @@ -1185,21 +1184,21 @@ sg_vma_nopage(struct vm_area_struct *vma, unsigned long addr, int *type) len = vma->vm_end - sa; len = (len < sg->length) ? len : sg->length; if (offset < len) { + struct page *page; page = virt_to_page(page_address(sg_page(sg)) + offset); get_page(page); /* increment page count */ - break; + vmf->page = page; + return 0; /* success */ } sa += len; offset -= len; } - if (type) - *type = VM_FAULT_MINOR; - return page; + return VM_FAULT_SIGBUS; } static struct vm_operations_struct sg_mmap_vm_ops = { - .nopage = sg_vma_nopage, + .fault = sg_vma_fault, }; static int |